John Humphrys – coming to a mind near you? Photograph: Graeme Robertson for the Guardian

It's that day again; the one that gave us the annual spaghetti harvest, fiesta on the charming island of San Seriffe, and the left-handed burger. This year, gorillas discovered the joy of iPads; BMW launched its royal wedding special edition M3 Coupe in Windsor white, badged in red, white and blue; a unicorn skeleton was found at the Tower of London; and Radio 4 forced the august John Humphrys to take a walk on the wild side and investigate the wonders of 3D radio.

However it was elsewhere on the BBC that garnered the greatest reaction – and duped many listeners.

Comedian Rob Brydon took charge of the Ken Bruce show on Radio 2, pretending to be the presenter himself.

Over the course of the two and a half hour show he insulted Jeremy Vine, told vulgar jokes and even conducted a fake interview with Sir Terry Wogan, ably impersonated by comedian Peter Serafinowitz.

Brydon said: "They were big shoes to fill but I loved the challenge of being Ken for the whole show. I'd seen Being John Malkovich and wanted to take it to the next level."

The Sun's exclusive, with a comment from wildlife expert Terry Nutkins, has delightful photographs of gorillas frolicking in the sun with iPads. Nutkins doubts we'll ever see them on Twitter or Facebook, but I don't know, there's always next year.

Radio 4's Today programme could soon be broadcast in 3D sound, promising to create the effect of John Humphrys inside your head. The report has the essential 1 April quality of plausible dullness, with interviews with the Tubular Bells sound engineers, and Evan Davis demonstrating a simple but effective technique for tuning out hiss.

Google offers a touching interview with Michael, its autocompleter, a geeky soul who began as a spellchecker but has now graduated to completing those awkward polysyllabic words faster than you can type. "My friends and family always say Michael, how come you always know what we're going to say?" He manages 34,000 words on a good day, and has been such a success that Google is now recruiting some colleagues for him.

Metro – which also reported the discovery of the unicorn at the Tower, with video so it must be true – launched its edible edition, using corn starch, vegetable oil and citric acid among other delicious ingredients: "Printing takes a few hours overnight – several seconds to print each page and slightly longer to dry. The finished products are even given a light vanilla scent. Charles Bouquet, of the Edible Paper Company, said the project would encourage recycling. He added: 'We hope it adds flavour to the stories and presents readers with a colourful menu of current affairs.'"

The Independent's page 3 boy is Cristiano Ronaldo: it reports that the footballer has agreed to "act like a patriot" and be sold to Spain for €160m, to help reduce his country's disastrous national debt. Funnily enough the Mirror also has a Spanish football related story: Fernando Torres is so gutted at his goal free performance at Chelsea since he transferred from Liverpool that he has called on team-mates to join him in an ancient Iberian curse-breaking ceremony involving a defecating goat, called the Dia de los Innocentes, which can only be performed on the first day of the fourth month. Goats, stop reading now, this might upset you: the first 12 fans who turn up at Stamford Bridge will be rewarded with choice cuts to take home.

On the BBC business news website, a special correspondent bylined Tok Enmale reports that a federation of men's groups is to take legal action against Mumsnet. Melvin Footlong, a dad from Weymouth, reflected the widely held views of many men when he complained: "Because I don't have access to Mumsnet's Am I being Unreasonable boards, I never know if I'm being reasonable or not. It puts me and other dads at a huge disadvantage." "It's not fair, I want to write EastEnders storylines too," he added."

The Radio Times website broke the appalling news that Jeremy Paxman is to quit University Challenge in outrage over the quiz being dumbed down. And quite right too. Multiple choice questions? Three lives, and "phone a professor"? Shocking.

The flight comparison site Skyscanner announced the maiden flight of Urchin Airways, such a terrifyingly plausible idea it should probably be kept from Michael O'Leary: the first child-passenger only plane took off from Heathrow, it reports. "Cabin crew on Urchin Airways will all be dressed as clowns and will oversee the library of video games and supervise a ball pit area. Activities such as egg-and-spoon races will be held along the aisle and targets woven into seating upholstery will offer youngsters the chance to hone their seat kicking skills. Whereas on regular flights children are scolded for making noise, screaming will be encouraged in 'who can scream loudest?' challenges." Actually I'm not sure this is an April Fool, I'm pretty certain I've been on that flight – many, many times.

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